If you haven't done this already, follow these steps:
For a stable experience in Minecraft 1.12.2, the community has largely transitioned to more advanced alternatives that perform the same function. Best Alternatives for Minecraft 1.12.2 craftguide mod 1.12.2 download
After installing, press (default hotkey) while in-game. A translucent window will pop up. Here is how to navigate: If you haven't done this already, follow these